表面荷正电聚苯乙烯胶体颗粒界面电性质的研究

Study on Interfacial Electrical Properties of Polystyrene Microsphere with Positive Electrical Charge

以偶氮二异丁脒盐酸盐V50（AIBA）为引发剂，水为分散介质，采用无皂乳液聚合法制备聚苯乙烯颗粒，制备出颗粒粒径为500nm左右单分散性的聚苯乙烯颗粒。研究结果表明：在一定条件下用该方法制备的胶体颗粒zeta电位曲线均出现在平台pH2.0～6.0，说明在一定条件下聚苯乙烯胶体颗粒具有良好的稳定性。

The water system was used as the dispersion medium in soap-free polysmerization of polytyrene （PS） using AIBA as an initiator. The size of PS colloidal particle was around 500 nm. The PS particles were stable Since their zeta-potential were invariable in the pH range of 2.0 to 6.0.